Simultaneous locking of doors of railway-carriages.



PATENTED MAR. 27, 1906. N. DEWHURST, J. W. MOORE & R. T. GRIFFITHS.SIMULTANEOUS LOOKING 0F DOORS 0F RAILWAY CARRIAGBS.

APPLICATION F ILED APR .17, 1905.

2 SHLETSSHEET 1.

"No. 815,948. r PATENTBD MAR. 27, 1906.

N. DE-WHURST, J. W. MOORE & R. T. GRIFFITHS. SIMULTANEOUS LOOKING 0PDOORS 0F RAILWAY GARRIAGBS.

APPLICATION FILED APR.17; 1905.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT OFFICE.

NATHAN DEWHURST, JOHN WILLIAM MOORE, AND ROBERT TAYLOR GRIFFITHS, OFACURINGTON, ENGLAND.

suvnuL'rAuvsous. LOCKING OF DooRsfoF RAILWAY-CARRIAGES.

Specification of Letters Patent.

Patented i'v'laron 27, 1906.

Application filed April 17,1905. Serial No 266,045.

county of Lancaster,'-England, subjects of the I King-of Great Britainand Ireland, have invented certain new and useful Improvements in andRelating to the Simultaneous Locking of Doors of Railway-Carriages, ofwhich the following is a specification.

This invention relates to a simple and ethcient means or apparatuswhereby all the doors of the carriages of a passenger-train can besimultaneously locked from .the guard s van, thereby reventing 'when thetrain is in motion the oors from opening, and consequently in many casesloss of life or damage to such door as may happen to be open.

In carrying .the said invention into effect reference is to be had tothe accompanying sheet of explanatory drawings, in wh'ich Figure 1 IS aside elevation of so much of a train as is necessary toillustrate theinvention. Fig. 2 is an under side plan view thereof, (connectionbetween carnages left out for c1earness,) andFig. 3 is a detail viewhereinafter referred to.

Like characters of reference indicate corhe doors a of thepassenger-carriage b are provided at their lower ends with a slot 0,

adapted to receive the locking-bolts (1, car

ried by the arm e of bell-crank levers f, lpivoted in brackets g on theunderframe The lower arms '2', of the bell-crank levers f are connectedat 7' to a side rod k, (one on either side of the carriage,) so that thesaid bell-cranks can be operated at one and the Sametime. Connected tothe rod k at any suitable part is a stud or projection l, engaging witha horizontal lever m, pivoted atn to the und'erframe and at its outerend connected to a link 0, ivotally attached to a central bar exten inglengthwise of the carriage an guided in brackets 9, depending from theundertra'me. At both ends of said centralbar or rod (111 is arranged arack 11, formed on a plate 8 an let into said rod, so that in event ofteeth breaking a fresh rack plate can easily be inserted,

andto ermitthe easy movement of the central re p any suitable form ofroller-bearings tie provided, as in Fig. 1.

- locking the doors.

'freely between the roller-bearing t and a lower roller-bearing 1 in abracket 9. The couplmg is so pivoted to the brackets q and the rod p asto move vertically. The coupling y being pivoted one to the other, as atno, to move horizontally. By this arrangement an approximate universalmovement is given. to t e coupling. Connected at 2 to the rod 1) on theguards van is the lower end 3 of a lever 4, pivoted at 5 to a sector 6in said van, so that on said lever 4 being operated the toothed sectora, through the medium of the universal coupling y, moves the rod 10 inthe direction of the arrow, and so through the medium of the link 0,lever m, stud Z, and rod is to rock the bell-crank levers f and withdrawthe bolts d from the slots 0 in the carriagedoors, allowing the same tobe swung open, the outer ends of the bolts (Z resting within the slots 7in the frame of the carriage.

In the case of the guards van it is unnecessary to rovide rack andsector, yet, if desired, the ever 4 may be provided at its lower endwith a sector to engage the central rod, and insome casesthat is to say,Where the carriages are not turned round end for end the rack and sectormay be dispensed with and a simple central bar and attendant parts onlyused, in which case the ends of the bars are connected by a suitableuniversal coupling, (indicated by a dot-and-dash line 8, as in Figs. 1and 2.) Further, to allow of free movement all the pivotal joints arereferably provided with ball or other suita le an.- tifriction-bearings.same bein shut, the reverse of the operation above set Iorthtakes place.

In the event of a collision occurring it is necessary that some means(non-access being had to the guard) should be provided for un- To thisend the stud or pin Z is provided-with a channel-sha ed extension 9, asin Fig. 3,.and connectc to the side rod is by means of a set-screw 10or-equivalent device, so that should the central rod or levers o andm orother parts become damaged the stud I can be easily freed from engage-fment with the lever m, leaving the side rod is in sections, certain ofsaid sections To look the doors, the.

free to be moved by hand, and to thereby unlock the doors of thecarriage.

Having now described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. In combination with a car having a plurality of doors on either side,a rod movable longitudinally of the car, bell-levers pivoted to the car,latches on one end of the levers engaging the door, bars connecting theopposite end of the levers, a connection between the bar and rod, andmeans for reciprocating the rod.

2. In combination with a car having a plurality of doors on-either side,a rod movable longitudinally of the car, bell-levers pivoted to the car,latches on one end of the lever en-' gaging the door, bars connectingthe opposite end of the levers, levers pivoted intermediate their lengthto the car, an end of each lever being piv .-tally secured to a bar, theopposite end of the lever having pivotal connection with the rod andmeans for reciprocating the rod.

In combination with a car having a plurality of doors on either side, arod movable lol'lgitudinally of the car, bell-levers pivoted to the car,latches on one end of the lever engaging the door, bars connecting theopposite end of the levers, levers pivoted intermediate their length tothe car, a pin movably held by each bar, a lever pivotally held by thepin, the opposite end of the lever having pivotal connections with therod, and means for reciprocating the rod.

4. In combination with a car having a plurality of doors on either side,a rod movable longitudinally of the car, bell-levers pivoted to the car,latches on one end of the levers engaging the door, bars connecting theopposite end of the levers, levers pivoted intermediate their length tothe car, an end of each lever being pivotally secured to a bar, theoppositeend of the lever being pivotally attached to an end of a link,the opposite end of the link being pivoted to the rod, and means forreciprocating the rod.

In testimony whereof we have afiixed our signatures in presence of twowitnesses.

NATHAN DEWHURST. JOHN WILLIAM MOORE. ROBERT TAYLOR GRIFFITHS.

Witnesses WM. H. RAWSON, GEORGE SPIERS.

